import React, {useState} from "react";
import {RegisterScreen} from "./register";
import {LoginScreen} from "./login";
import styled from "@emotion/styled";
import {Card, Divider, Button, Typography} from 'antd'
import logo from 'assets/logo.svg'
import left from 'assets/left.svg'
import right from 'assets/right.svg'
import { useDocumentTitle } from "utils";

export const UnauthenticatedApp = () => {
    const [isRegister, setIsRegister] = useState(false)
    const [error, setError] = useState<Error | null>(null)
    useDocumentTitle('请登录注册以继续')
    return <Container>
        <Header/>
        <Background/>
        <ShadwCard>
            <Title>{isRegister ? '请注册' : '请登录'}</Title>
            {error?<Typography.Text type={"danger"}>{error.message}</Typography.Text>:null}
            {isRegister ? <RegisterScreen onError={setError}/> : <LoginScreen onError={setError}/>}
            <Divider/>
            <Button type={'link'} onClick={() => setIsRegister(!isRegister)}>
                {isRegister ? '已经有账号了？直接登录' : '没有账号？注册新账号'}
            </Button>
        </ShadwCard>
    </Container>
}
export const LongButton = styled(Button)`
  width: 100%
`
const Title = styled.h2`
  margin-bottom: 2.4rem;
  color: rgb(94, 108, 132);
`
const Background = styled.div`
  position: absolute;
  width: 100%;
  height: 100%;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: left bottom, right bottom;
  background-size: calc(((100vw - 40rem) / 2) - 3.2rem), calc(((100vw - 40rem) / 2) - 3.2rem), cover;
  background-image: url(${left}), url(${right});
`
const Header = styled.header`
  background: url(${logo}) no-repeat center;
  padding: 5rem 0;
  background-size: 8rem;
  width: 100%;

`
const ShadwCard = styled(Card)`
  width: 40rem;
  min-height: 56rem;
  padding: 3.2rem 4rem;
  border-radius: 0.3rem;
  box-sizing: border-box;
  box-shadow: rgba(0, 0, 0, 0.1) 0 0 10px;
  text-align: center;
`
const Container = styled.div`
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
`
